DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerFront door speaker
Description
The AV control unit sends audio signals to the BOSE speaker amp. The BOSE
speaker amp. amplifies the
audio signals before sending them to the front door speakers using the audio
signal circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. ...
Mode door control system
System Diagram
System Description
The mode door is automatically controlled by the temperature setting, ambient
temperature, in-vehicle temperature,
intake temperature and amount of sunload.
SYSTEM OPERATION
The A/C auto amp. receives data from each of the sensors.
The A/C auto amp. ...
Rear view monitor system
System Diagram
System Description
When the shift selector is in the R position, the display shows a view to the
rear of the vehicle. Lines which indicate the vehicle clearance and distances
are also displayed.
Component Parts Location
Tweeter LH M143
Tweeter RH M144
AV control ...